The term used to descibe someone with a fucking huge forehead. The term oftern referres to Julien Lescott (Who has the fattest beefiest forehead anyone has even seen, it's fucking abnormal, I would check that beast out if I were you) Otherwise known as a meathead or a fucking dockoff forehead.

Oi lad, you seen the size of that kids Beefhead?'' *Points at Lescott* ''Fuck that's huuuuuuuge, that's a head and a half right there son!

A casual, yet effective insult to a person antagonizing, criticizing or making fun of you.
A person that is sassing you.
A person stealing your thunder.
synonymous with idiot, beefcake, wiener, butthead, etc.

variant of meathead, but with the bovine provlivity of standing around blinking stupidly when any word of more than one syllable is spoken to them. Beefheads are also more heavily built than meathead. Academics are currently devising a standardised physiological test which will be able to identify which football players are meatheads and which qualify as beefheads